Fountain-pen.



R. A. 'KER. FOUNTAIN PEN.

-.APPLICATION FILED APR. 12, 1915. 1,228,781 Patented June 5; 1917.

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ROBERT ANDREW KER, OF LONDON, ENGLAND.

FOUNTAIN-PEN.

Specification of Letters Patent.

Patented June 5, 11.91 "Z.

Application fi1er1 April 12, 1915. Serial No. 20,890.

To all whom it may concern:

Be it known that I, Ronnn'r ANDREW K1111, a subject of the King of GreatBritain, residing at 13 Bayston road, Stoke Newington,

. London, England, have invented new and useful Improvements inFoi'intaiu-Pens, of which the fol lowin is a specification.

My invention relates to fountain pens of the type wherein a valve isprovided for controlling the flow of ink from the reservoir to the pen,and the present invention consists in a novel a rangemcnt for operatingsuch a valve.

In the pen constructed according to my invention the nib section, thatis to say, the section in wl'iich the nib is carried and in connectionwith which the regulatingvalve operates is made in two parts, one ofwhich is designed to be screwed into the end of the reservoir and fixedtherein in the ordinary manner, and is hereinafter for convenience ofdescription refererd to as the thimble, while the other is adapted torotate with relation to the fixed portion and is hereinafter referred toas the nib-holder. This nib-holder is provided with an extension havingformed in it spiral slots in which pins on the stem of the cone piece orvalve engage. The valve is held against rotation with relation to thethiinble so that the relative rotation of the said thimlole andnibholder serves to raise and lower the valve in the required manner.

To enable the invention to be fully understood I will describe the sameby reference to said valve being shown as resting upon its seat.

Fig. 2 is a view similar to Fig. 1 but showing the parts moved to liftthe valve away from its seat.

Figs. 3 and 4: are sectional views at right angles to each other of whatI have termed the thimble, and

Fig. 5 is a sectional elevation of the nibholder.

Figs. 6 and 7 are elevations at right angles to one another, of thevalve.

a indicates the reservoir of the pen and b, c the thimble and nib-holderrespectively, the former of which is adapted to be screwed into the endof the reservoir a and to remain stationary with relation thereto, whilethe latter is adapted to rotate with respect to the thimble. Thisnib-holder c, which is shown detached in Fig. 5, is provided with thetubular extension (Z which is designed to he passed through the thimhleZ) and to be held against longitudinal movement therein by means of anut e secured to its upper end, but left free to rotate in the saidthimble 6. Around the neck of this extension (Z aring 7 of cork or otherpacking material is placed, the said ring of packing material beingdesigned to enter a recess 9 formed in the thimble I) as clearly shownin Figs. 1 and 3, this ring of packing material serving to prevent inkfrom the reservoir from escaping through the joint between the thimbleand nib-holder.

h is the valve which, as shown, is provided with a coned end 71 designedto cooperate with a corresponding seat in the nib-holder c. In theextension (Z of the nib-holder 0 are formed two spiral slots 70, k andon the stem of the valve are two projections Z, Z which may be rollersmounted on a trans verse pin, as shown, the said rollers being designedto work in the spiral slots k, 70. In the thimble I) are formed twostraight grooves m, 'm, and the pins Z, Z are made long enough toproject right through the spiral slots is, k into the said grooves m, m,this engagement of the pins Z, Z with the said grooves serving to holdthe valve against rotation as regards the thimble.

With this arrangement it will be understood that when the thimble andnib-holder are rotated, with relation to one another, a longitudinalmovement of the valve 71 with relation to its seat will take place, sothat when the valve is upon its seat the flow of ink to the nib will becompletely stopped, while when the valve is more or less raised from itsseat a corresponding flow of ink will take place.

Fig. 1 shows the valve 72. resting upon its seat; if, when in thisposition, the nib-h0lder a is gripped and the reservoir a having thethimble Z) upon it is rotated through an angle of, say, 90, in thedirection indicated by the arrow, Fig. 1, the efiect will be to rotatethe said valve relatively to the extension (Z, so that the pins Z, Z onthe valve will run along the spiral slots 70, 7c and lift the valve tothe position shown in Fig. 2. By a reverse movement of the thimble b itwill be understood that the valve 72. will be returned to its seat.

Claims.

1. A fountain pen comprising a barrel, a thimble screwed into saidbarrel from the front end thereof and provided with an internallongitudinal groove, a rotatable nib holder detachably mounted in saidthimble and provided with a valve seat and having a spiral slot in itswall, and a valve arranged in said nib holder and provided with a projection which passes through said spiral slot and engages the groove ofthe thimble, whereby the relative rotation of said thimble and nibholder will cause said valve to open or close.

2. A fountain pen comprising a barrel provided at its forward end withinternal screw threads, a thimble screwed into said barrel from thefront end thereof and provided with a longitudinal groove and an annularrecess, a nib holder rotatably mounted in said thirnble, and provided atits upper end with screw threads, a nut engaging the screw threads ofsaid nib holder for detachably connecting the nib holder and thimble, apacking arranged in'said recess for preventing the passage of inkbetween said nib holder and the lower end of the thimble, said nibholder being also provided with a valve seat and with spiral slots, anda valve located in said nib holder for engagement with said valve seatand provided with projections which pass through said slots and engagesaid grooves, whereby the relative rotation of said thimble and nibholder will cause said valve to open and close.

ROBERT ANDREXV KER.

WVitnesses C. G. REDFERN, A. ALBUTT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

